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Patented Feb. 14, 18u88.,

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EnEDEErcK LEiNiNeER, or NEW vonk, N. Y., AssreNon r.ro cHAELEs DE B. sHErARD, oE'sAME PLACE.

STEPV Fo-R VSPIN DLES.

SPECIFICATION forming part of Letters Patent No. 377.902,'dated February 14.1888. i

Application filed J unefi, 1887. Serial No. 240,294. (No model.)

To al? whom t may concern: l

Be 1t known that I, FREDERICK LEININGER,

a citizen of the United States, residing at New step for the reception and support of spindles for centrifugal and other machines adapted to run at an exceedingly high speed, whereby the friction attending the running of the same is reduced to a minimum, means for lubricating the saine uniformly and at all times, and to provide an adjustment for the spindle whereby the same may be raised and lowered to desired: positions.

Other objects and advantages of the invention will hereinafter appear, and the novel features will be particularly pointediout in the claims.

Referring to the drawings, Figure l is a central vertical section of the lower end of a spindie provided with a step constructed in accordance with my invention; and Fig. 2 is a similar view, the spindle being mounted for rotation in the base'of a centrifugal machine and provided with lubricating devices constructed in accordance with my invention.

Similar letters of reference indicate like parts in both figures.

A represents the base of a centrifugal niachine, which in this instance is of ordinary construction and formed with the openings A' A2 and the bridge or transverse partition A3, provided at its center with the flanged bushing A4. FiXedly secured within the bushing Ais the step-case B, centrally bored to receive an interposed lining or sleeve, BX, and screwthreaded at its,` bottom interiorly, as, at B', to receive an eXteriorly-screw-threaded and interiorly-bored spindle-step, C, formed with the seat C and the adjusting-pins G2. Mounted upon the screw-threaded exteriorof said spindle-step is av set-wheel, C3, foi` retaining the spindle-step' at the desired elevation after being adjusted by the pins C. Coupled to the bottom of the spindle-step by means of a screwthreaded nut, D, is a screw-threaded tube, D',

communicating with the bore in the spindlestep, and to the bottom of the tube D' is connected the oil-duct E', which extends out of the base through the opening A?. and upwardly to a height above the plane of the spindle-seat C', where it is provided withan oil receiver or cup, E. By this arrangement of the oil-duct and the parts to be oiled it is evident that oil .may be conveniently poured into the cup and the different parts making up the machine.

By the peculiar and novel manner of mounting the spindle in the spindle-step I overcome the liability'of overheated bearings, and,even should this occur or the parts break, the stoppage of the spindle wouldA be gradual andattended with no injury.

Referring more particularly to Fig. l of the drawings, which is an enlarged view showing the manner of seating the spindle within its bearing, F represents the spindle, the upper portion of which is broken oii". In the bottom of the spindleFis formed a conical socket, F', which is adapted to receive and snugly fit the conical end G of a lower spindle, G, provided with a central indenture or recess, G2, in its bottom for the admission of thelubrican't.- The lower spindle, G, is of a size adapted to iit loosely within the spindle-seat C', and interposed between said spindle and said seat are a series of cylindrical washers, H, lthe same size as the spindle, and perforated, as at H', centrally, preferably, for conducting the lubricant between the washers and the walls of the .seat and between the washers and the bottom washers, the spindle will rotate upon the next adjacent washer;r and Should itha'ppen that this washerin time,from long running,becomes overheated, the spindle and adherent washers will revolve upon the next adjacent Washer, and so ou down throughout the entire series, which may consist of as many washers as de sircd.

By experience, and it is well known to those familiar with mechanism, it has been found that brass ruiming against brass or steel against steel is attended with more friction and wear than when the two different metals are employed in connection with each other. For this reason I form the washers alternately of brass and steel, so that, no matter which of the washers revolve and which stick, the steel spindle is always revolving upon a brass seat.

Having described my invention and its operation, what I claim is- 1. The combination, with a spindle, of a hollow step-case, a hollow spindle-step, and a series of perforated rotatable disks arranged in the said step, and an oil-duct communicating therewith, substantially as specified.

2. The combination, with a spindle, of a hollow spindle-step, a series of perforated rotatable disks made of different metals, and an oilduct communicating therewith, substantially as specified.

8. The combination, with a spindle and a hollow step for the same, of a lower spindle mounted in the end of the spindle, a series of perforated disksinterposed between the lower end of the lower spindle and spindle-seat, and an oil-duct communicating therewith, substantially as specified;

4. The combination, with a spindle, of a hollow exterior] y screw threaded spindle-step mounted in a fixed step-case, a series of perforated rotatable disks or washers arranged between the spindle and within the step, and an voil-duct communicating with the step, substantially as specified.

5. The combination, with a spindle, of a step-case mounted in a fixed bushing in the machine and' provided with an interposed lining or sleeve, a screw-threaded hollow spinelle-step mounted in the step-case, projecting pins for adjusting said spindlcvstep, anda setwheel mounted thereon for retaining the seat in an adjusted position, substantially as specied.

6. The combination, with the base A, having the bridge A3 and opening A, and the bushing A4, of the step-case B and its lining or sleeve, the spindle F, having the recess F', the lower spindle, G, the washers H, perforated as at H', the spindlestep C, pipe D', the nut D, and the oil-duct E', having the cup E, substantiallyas shown and described.

In testimony whereof I aiix my signature in presence of two witnesses.

FREDERICK LEININGER.

Witnesses: y

E. B. STOCKING, W. S. DUVALL. 

